Mulberry (Morus alba L.) planting increased the abundance of soil carbon cycling functional genes by improving soil properties, and further enhanced the stability of soil carbon pool
文献类型： 外文期刊
作者： Zhu, Meina 1 ; Yang, Zi 1 ; Wang, Zhenjiang 3 ; Tsigbey, Victor Edem 1 ; Cui, Zipei 1 ; Zhang, Wenfeng 1 ; Zhu, Weijun 4 ; Li, Jianbin 1 ; Qiu, Changyu 5 ; Lin, Qiang 5 ; Li, Haonan 1 ; Shahid, Hanfa 1 ; Zhao, Mengdi 6 ; Zhao, Weiguo 1 ;
作者机构： 1.Jiangsu Univ Sci & Technol, Sch Biotechnol, Jiangsu Key Lab Sericultural & Anim Biotechnol, Zhenjiang 212100, Peoples R China
2.Chinese Acad Agr Sci, Key Lab Silkworm & Mulberry Genet Improvement, Minist Agr & Rural Affairs, Sericultural Res Inst, Zhenjiang 212100, Peoples R China
3.Guangdong Acad Agr Sci, Sericultural & Agri Food Res Inst, Guangzhou, Peoples R China
4.Liyang Tianmu Lake Agr Dev Co Ltd, Liyang, Peoples R China
5.Sericulture Technol Promot Stn, Guangxi Zhuang Autonomous Reg, Nanning 530007, Peoples R China
6.Suzhou Univ Sci & Technol, Dept Mat Sci & Engn, Suzhou 215011, Peoples R China
关键词： Carbon pool stability; Oxidizable organic carbon fraction; Aggregate classification; Ecologically fragile area; Mulberry
期刊名称：PLANT AND SOIL （ 影响因子：4.1； 五年影响因子：4.7 ）
ISSN： 0032-079X
年卷期： 2025 年
页码：
收录情况： SCI
摘要： BackgroundAfforestation is regarded as an effective strategy to increase carbon (C) sequestration. Mulberry plantation has both economic and cultural significance. However, the study of its influence on soil C pool stability remains limited.MethodsThe chemical and physical stability characteristics of soil C in mulberries and control wastelands were determined. The mechanism underlying C pool stability change was analyzed in conjunction with soil physicochemical properties, microbial metagenomic characteristics, and climatic factors.Results(1) Compared with wastelands, mulberries showed a 26.6% increase in total soil organic carbon (TSOC) content, and the macroaggregates C content contributing 79.51%; the content of recalcitrant OC (F4) significantly increased by 97.57%, and the stability coefficient increased from 0.92 to 1.30. (2) The relative abundance of Glomeromycetes increased by 81.87% and encoding C degradation and fixation related genes 27 out of 35 genes significant increase. (3) The C cycle genes abundance in mulberry soils were positively correlated with F4, SOC in macroaggregates, and TSOC; in wasteland soil, most of the genes above were positively correlated with labile OC, SOC in silt + clay and TSOC. The correlation between Glomeromycetes and C characteristics were weak. (4) High MAP and MAT increased C cycling gene abundance by decreasing pH. In mulberry soils, an increase in C cycling genes abundance promoted the accumulation of stable C fractions. Conversely, in wasteland soils, it favored the accumulation of active C fractions.ConclusionOur research results provide a theoretical foundation for the evaluation and management of soil C pool stability in mulberry planting systems.
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